@echo off
For /f "tokens=2-4 delims=/ " %%a in ('date /t') do (set mydate=%%a%%b)
For /f "tokens=1-2 delims=/:" %%a in ('time /t') do (set mytime=%%a%%b)
set filename=wuliu24_%mydate%_%mytime%_s.sql

pg_dump  --dbname=postgresql://btlh:btlh@book.loft:5433/wuliu -f %filename% 